Elements on the periodic table are arranged in increasing order of ______________.

• number of neutrons
• atomic number
• isotopes
• charge

Vertical (up and down) columns in the periodic table are called _________ of elements and have similar properties. 

• groups
• periods

The horizontal (left to right) rows on the periodic table are known as

• periods.
• atoms.
• groups or families.
• valence electrons.

Carbon has an atomic number of

• 5

• 6

• 12

• 12.01

Tags

NGSS.MS-PS1-1

The number at the bottom of each square on the periodic table is the ...

• atomic number
• atomic mass
• chemical symbol
• element name

What is the chemical symbol for Lithium?

• H
• He
• Li
• N

What group of elements are along the staircase?

• metals

• nonmetals

• metalloids

Which of these is a metalloid?

• Na (#11)

• As (#33)

• O (#8)

Most metals share three common physical characteristics. Which of the options is not one of the three?

• shiny luster

• good conductor of electricity

• brittle

• Malleable

The periodic table is mostly made up of what type of element?

• Metals

• Nonmetals

• Metalloids